GPS Tracker for Kids: Mini, Portable Child GPS Tracker with Two-Way Communication and SOS by text alert., Model: , Electronics & Accessories Store T-MOBILE VOICE PLAN or PHONE LINE and ACTIVE SIM (not included) required for use. Like all TRACK KIDS ON THE MOVE by speed, distance or area - school bus, parks, sports, friend's house, TO MAKE EMERGENCY CONTACT: Use SOS or 3 other outbound call buttons to reach pre-authorized TRACK YOUR VALUABLES: Hide device in your Bike, motorcycle, car, expensive equipment - can GPS TO LOCATE TRACKER: Google Maps link with tracker location is received by text message when device